Comment 6 for bug 1383618

Reviewed: https://review.openstack.org/141497
Committed: https://git.openstack.org/cgit/openstack/heat/commit/?id=35ac781db3d529317bac691eae3fb08d208d1e56
Submitter: Jenkins
Branch: master

commit 35ac781db3d529317bac691eae3fb08d208d1e56
Author: Zane Bitter <email address hidden>
Date: Fri Dec 12 15:20:24 2014 -0500

    Always update nested stacks

    There's no reason to not issue an update to a nested stack, so don't bother
    trying to decide if its inputs have changed (and especially don't replace
    it because it's in a failed state). Overriding _needs_update() also allows
    us to remove what was effectively an isinstance check from the previous
    handling of failed states.

    Change-Id: Ia48ebfcb6c1b3a904f01a83f8f34d8c7a13bb2be
    Related-Bug: #1383618